/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package org.jboss.netty.channel;

import java.util.concurrent.TimeUnit;

/**
 * A skeletal {@link ChannelFuture} implementation which represents a
 * {@link ChannelFuture} which has been completed already.
 */
public abstract class CompleteChannelFuture implements ChannelFuture {

	private final Channel channel;

	/**
	 * Creates a new instance.
	 * 
	 * @param channel
	 *            the {@link Channel} associated with this future
	 */
	protected CompleteChannelFuture(Channel channel) {
		if (channel == null) {
			throw new NullPointerException("channel");
		}
		this.channel = channel;
	}

	public void addListener(ChannelFutureListener listener) {
		try {
			listener.operationComplete(this);
		} catch (Throwable t) {
			t.printStackTrace();
		}
	}

	public void removeListener(ChannelFutureListener listener) {
		// NOOP
	}

	public ChannelFuture await() throws InterruptedException {
		if (Thread.interrupted()) {
			throw new InterruptedException();
		}
		return this;
	}

	public boolean await(long timeout, TimeUnit unit) throws InterruptedException {
		if (Thread.interrupted()) {
			throw new InterruptedException();
		}
		return true;
	}

	public boolean await(long timeoutMillis) throws InterruptedException {
		if (Thread.interrupted()) {
			throw new InterruptedException();
		}
		return true;
	}

	public ChannelFuture awaitUninterruptibly() {
		return this;
	}

	public boolean awaitUninterruptibly(long timeout, TimeUnit unit) {
		return true;
	}

	public boolean awaitUninterruptibly(long timeoutMillis) {
		return true;
	}

	public Channel getChannel() {
		return channel;
	}

	public boolean isDone() {
		return true;
	}

	public boolean setProgress(long amount, long current, long total) {
		return false;
	}

	public boolean setFailure(Throwable cause) {
		return false;
	}

	public boolean setSuccess() {
		return false;
	}

	public boolean cancel() {
		return false;
	}

	public boolean isCancelled() {
		return false;
	}
}
